Difference time between United States of America and South Korea in hours, minutes, and seconds is [ -13 hours ] with gregorian date today is Saturday 13th of September 2025 in American local time, Where the time now in United States of America is 15:17 PM and the time now in South Korea is 04:17 AM in South Korean local time and the time comparison between United States of America and South Korea in greenwich time ( GMT ) where United States of America late for greenwich time ( GMT -04:00 ) while South Korea advanced about greenwich time ( GMT +09:00 ).